scholarly journals Association of low serum calcium concentration after calving with productive and reproductive performance in multiparous Jersey cows

2021 ◽  
Author(s):  
Ainhoa Valldecabres ◽  
Noelia Silva-del-Río
Keyword(s):  
Serum Calcium ◽  
Reproductive Performance ◽  
Calcium Concentration ◽  
Serum Calcium Concentration ◽  
Jersey Cows ◽  
Low Serum

1,25-Dihydroxyvitamin D3 restores fertility of vitamin D-deficient female rats

1989 ◽  
Vol 256 (4) ◽  
pp. E483-E487 ◽  
Author(s):  
G. G. Kwiecinksi ◽  
G. I. Petrie ◽  
H. F. DeLuca
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Serum Calcium ◽  
Reproductive Performance ◽  
Calcium Concentration ◽  
Female Rats ◽  
Reproductive Capacity ◽  
Dihydroxyvitamin D3 ◽  
Serum Calcium Concentration ◽  
1,25 Dihydroxyvitamin D3

Vitamin D deficiency reduces mating success and fertility in female rats, but it is not known if the reduction in reproductive performance is a direct action of vitamin D or the hypocalcemia associated with vitamin D deficiency. The effect of vitamin D deficiency with normocalcemia on fertility and reproductive capacity in female rats was investigated. Female weanling rats were maintained on vitamin D-deficient or vitamin D-replete diets until maturity and mated to age-matched, normal, vitamin D-replete males. Three groups of vitamin D-deficient females were maintained on diets varying in calcium and Pi concentrations to test the effect of vitamin D deficiency with different serum calcium and Pi concentrations on reproductive performance. Vitamin D-deficient females were capable of reproduction, but successful matings by all groups of vitamin D-deficient females were markedly reduced regardless of serum calcium concentration, when compared with matings with vitamin D-replete females. Fertility was also drastically reduced in litters from all groups of vitamin D-deficient females regardless of serum calcium concentration, when compared with litters from vitamin D-replete females. Vitamin D-deficient female rats that received vitamin D or 1,25-dihydroxyvitamin D3 were capable of successfully mating and giving rise to normal, healthy litters. These results indicate that vitamin D and not hypocalcemia is directly responsible for reduced reproductive capacity and fertility in vitamin D-deficient female rats.

scholarly journals The Synergy Beteeen Diurnal Temperature Range and Calcium Concentration Help to Predict Hospital Mortality in Patients with Acute Myocardial Infarction

2022 ◽  
Author(s):  
Xingbo Gu ◽  
dandan liu ◽  
ning Hao ◽  
xinyong Sun ◽  
xiaoxu Duan ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Risk Factor ◽  
Hospital Mortality ◽  
Serum Calcium ◽  
Roc Curve ◽  
Diurnal Temperature Range ◽  
Calcium Concentration ◽  
Serum Calcium Concentration ◽  
Low Serum

Abstract Epidemiological studies have suggested that cold is an important contributor to acute cardiovascular events and mortality. However, little is known about the Diurnal Temperature Range(DTR)impact on mortality of the patients with myocardial infarction.Calcium ions(Ca2+)play a vital role in the human body, such as cardiac electrophysiology and contraction.To investigate whether DTR on admission moderates the association between serum calcium and in-hospital mortality in patients with acute myocardial infarction(AMI). This retrospective study enrolled consecutive adult patients with AMI at a single center in China (2003–2012). Patients were divided into four groups (Ca-Q1–4) according to serum calcium concentration quartiles. Multivariate logistic regression modeling was used to assess whether DTR moderated the association between serum calcium and in-hospital mortality. The predictive value of serum calcium was evaluated by receiver operating characteristic (ROC) curve and net reclassification improvement (NRI) analyses.The study included 3780 patients.In-hospital mortality was 4.97%(188/3780).DTR moderated the association between serum calcium and in-hospital mortality(P-interaction=0.020).Patients with low serum calcium in the highest DTR quartile exhibited an increased risk of in-hospital mortality(odds ratio for Ca-Q4 vs.Ca-Q1, 0.03;95%confidence interval[95%CI], 0.01–0.20;P for trend<0.001).In the highest DTR quartile, adding serum calcium concentration to the risk factor model increased the area under the ROC curve(0.81 vs.0.76;P<0.001)and increased NRI by 20.2%(95%CI 7.5–32.9;P=0.001).Low serum calcium was an independent risk factor for in-hospital mortality in patients with AMI, and this association was moderated by DTR.Careful attention should be paid to patients with low serum calcium who experience a higher DTR on admission.

Serum Calcium and Its Association with Preeclampsia

2021 ◽  
Vol 20 (2) ◽  
pp. 379-383
Author(s):  
Sultana Parvin ◽  
Saleha Begum Chowdhury ◽  
KN Nahar ◽  
MD Mozammel Hoque
Keyword(s):  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Serum Calcium ◽  
Calcium Concentration ◽  
Medical Science ◽  
Serum Calcium Concentration ◽  
Group A ◽  
Group B ◽  
And Control ◽  
Low Serum

Background: The purpose of the study was to evaluate association of serum calcium concentration with preeclampsia. Method: This study was carried out in the Department of Obstetrics and Gynaecology of Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh from January 2016 to December 2016 including 120 antenatal patients in their second half of pregnancy. All the included patients were classified as 40 mild preeclampsia (Group A) 40 severe preeclampsia (Group B) and 40 normal pregnant women (Group C). Serum calcium was estimated in the Department of Biochemistry and correlated with preeclampsia. Result: In results the mean serum calcium concentration was found 8.2±0.2mg /dl in Group A, 7.6 ± 0.3 mg/dl in Group B and 9.0±0.5 mg/dl in Group C (p=0.001). Low serum calcium was found 53.7% and 12.5% in case and control respectively. The difference was statistically significant (p=<0.05) between case and control groups having OR=8.1 with 95% CI (2.7 - 26.5) %. Pearson’s correlation test revealed that both systolic and diastolic blood pressure had negative correlation with the serum calcium concentration (p=<0.05). Conclusion: In conclusion this study showed that low serum calcium is associated with preeclampsia and its concentration inversely proportional to the severity of preeclampsia and both systolic and diastolic blood pressure. Bangladesh Journal of Medical Science Vol.20(2) 2021 p.379-383

Calcium Excretion and Serum Calcium Concentration in Adult Intact and Gonadectomized Rats

Endocrinology ◽  
1968 ◽  
Vol 83 (6) ◽  
pp. 1375-1376 ◽  
Author(s):  
BERNARD F. RICE ◽  
ROY PONTHIER ◽  
M. CLINTON MILLER
Keyword(s):  
Serum Calcium ◽  
Calcium Concentration ◽  
Calcium Excretion ◽  
Serum Calcium Concentration

scholarly journals Effects of Ammonium Chloride Supplements on Serum Calcium Concentration in Pre-parturient Dairy Cows

2002 ◽  
Vol 55 (4) ◽  
pp. 219-222 ◽  
Author(s):  
Naoto SUZUKI ◽  
Akihiro DAIRAKU ◽  
Tomio KATAGAI ◽  
Gensei TSUNODA ◽  
Kazuyuki SUZUKI ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Ammonium Chloride ◽  
Serum Calcium ◽  
Calcium Concentration ◽  
Serum Calcium Concentration

scholarly journals Effect of the first and second postpartum partial milking on blood serum calcium concentration in dairy cows

2014 ◽  
Vol 59 (No. 3) ◽  
pp. 128-133
Author(s):  
E.G. Salgado-Hernández ◽  
A. Aparicio-Cecilio ◽  
F.H. Velásquez-Forero ◽  
D.A. Castillo-Mata
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Serum Calcium ◽  
Metabolic Disorders ◽  
Calcium Concentration ◽  
Atomic Absorption Spectrophotometry ◽  
Serum Calcium Concentration ◽  
Group 2 ◽  
Group 1

Parturient paresis and subclinical hypocalcemia are frequent metabolic disorders in dairy cows postpartum. The aim of this study was to determine the effect of postpartum partial milking in the first two milkings on blood serum calcium concentration in dairy cows. Twenty multiparous Holstein dairy cows were randomized into two groups. Cows of group 1 (n = 10) were partially milked at the first and second milking postpartum. Cows of group 2 (n = 10) were completely milked. Blood samples were collected from all animals 5&ndash;7 days before calving, within 30 min after calving, and 4, 8, 12, 16, 20, 24, 28, and 32 h after calving for determination of serum calcium (Ca), phosphorus (P), and magnesium (Mg) concentrations. Colostrum production was registered and sampled in the first and second milking. Concentration of Ca in colostrum was determined by atomic absorption spectrophotometry. Serum Ca and P concentrations decreased in both groups after parturition (P &lt; 0.05) and remained low during 32 h postpartum with no difference observed between groups (P &gt; 0.05). Serum concentrations of Mg were stable in all samples and no statistical difference was observed between groups (P &gt; 0.05). Colostrum production was higher in completely milked cows only in the first postpartum milking (P &lt; 0.05), but there was no difference between groups at the second milking. Total Ca secretion in colostrum was higher in the complete milking group at the first and second postpartum milking. Colostrum Ca secretion increased at the second milking with respect to the first one in both groups (P &lt; 0.05). There was no correlation between serum Ca and colostrum Ca (P &gt; 0.05). In this study, the partial milking of colostrum in the first and second milking postpartum did not prevent subclinical hypocalcemia in dairy cows. &nbsp;

Acute Dystonic Reaction to Methotrimeprazine in Hypoparathyroidism

1996 ◽  
Vol 30 (9) ◽  
pp. 957-959 ◽  
Author(s):  
Hanan Gur ◽  
Yoav Paz ◽  
Yechezkel Sidi
Keyword(s):  
Adverse Effects ◽  
Serum Calcium ◽  
Calcium Concentration ◽  
Antipsychotic Drugs ◽  
Combined Effects ◽  
Serum Calcium Concentration ◽  
Dystonic Reaction ◽  
Case Summary ◽  
Adenylate Cyclase Activation ◽  
Increased Sensitivity

OBJECTTVE: To report a case of acute dystonic reaction to methotrimeprazine in a patient with untreated hypoparathyroidism, emphasizing the potential increased sensitivity of hypocalcemic patients to the extrapyramidal adverse effects of antipsychotic drugs. CASE SUMMARY: An 80-year-old man who had untreated hypoparathyroidism and chronic hypocalcemia developed an acute dystonic reaction 20 minutes after ingestion of methotrimeprazine 25 mg. His medical history included an ill-defined psychiatric disorder for which he had been treated with methotrimeprazine several years earlier. The patient denied having any other diseases or taking any other medications. After 4 days, the disorientation, psychomotor restlessness, dystonic grimacing, protrusion of the tongue, and speech difficulties disappeared, despite a remaining low serum calcium concentration. DISCUSSION: A possible mechanism, by which striatal calmodulin-mediated adenylate cyclase activation is inhibited by the combined effects of phenothiazines and hypocalcemia, is discussed. CONCLUSIONS: In this patient, it is not possible to ascertain whether the dystonic reaction was due to hypocalcemia, phenothiazine administration, or both. However, it is suggested that patients with hypocalcemia may be sensitive to the extrapyramidal adverse effects of antipsychotics. In addition, acute unexpected dystonic reactions to a small dose of antipsychotics warrants measurement of the patient's serum calcium concentration.

A Membrane Ultrafiltration Procedure for Determining Diffusible Calcium in Serum

1970 ◽  
Vol 16 (3) ◽  
pp. 226-228 ◽  
Author(s):  
Genevieve Farese ◽  
Milton Mager ◽  
William F Blatt
Keyword(s):  
Serum Calcium ◽  
Calcium Concentration ◽  
Simple Procedure ◽  
Total Serum ◽  
High Flux ◽  
Ultrafiltration Membranes ◽  
Serum Calcium Concentration ◽  
Normal Value ◽  
Total Serum Calcium ◽  
The Mean

Abstract A rapid, simple procedure is described for separating diffusible from proteinbound serum calcium by centrifugation through high-flux ultrafiltration membranes. The mean normal value for ultrafilterable calcium was 57.1% (range 52 to 61%) of the total serum calcium concentration.

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